Lukas Saari
About Lukas Saari
Lukas Saari is the co-founder and CEO of Tandem Health, a Stockholm healthtech company that builds an AI medical assistant for clinicians. Tandem was founded in 2023 with Oscar Boldt-Christmas and Oliver Åstrand. Tandem says its assistant is used by more than 1,000 care organizations, with operations across the Nordics, UK, Germany, France and Spain.
Before Tandem, he led McKinsey's Healthcare Analytics practice in the Nordics. Tandem's site describes the role as leading McKinsey's Nordic AI and digitization practice. His conference bio says he has a Master's in machine learning, worked on machine learning at Spotify and founded an algorithmic trading company.
Tracxn lists three angel investments for Lukas, all in Swedish companies and all seed rounds: Spiich (November 2025), Brickanta (January 2026) and Agaton (February 2026). Crunchbase also lists him as an investor in Agaton's seed round. These records suggest his angel activity is recent and runs alongside his operating role at Tandem. He has not published a personal investing thesis that we could find.
Agaton is the AI round we can confirm. Agaton is a Stockholm startup that turns customer conversations into revenue insights. In February 2026 it announced a seed round of EUR 8.4M (about $10M), co-led by Inception Fund and Alstin Capital. seed+speed Ventures and Foundry Ventures also took part. EU-Startups lists Lukas among the angels in the round, described as co-founder of Tandem Health. Other angels named include Peter Sarlin of Silo AI and Sebastian Knutsson, co-founder of King.
The public record shows seed-stage investments in Swedish startups. Tracxn classes his portfolio mainly as Enterprise Applications and High Tech. He appears to invest alongside institutional seed funds rather than leading rounds, and Crunchbase shows no lead-investor role for him on Agaton. His check size, target ownership and any stated criteria are not public, so we have left them out.
- Agaton: Stockholm startup that turns customer conversations into revenue insights. Lukas joined its seed round in February 2026.
- Brickanta: Swedish startup. Tracxn records his seed-round investment in January 2026.
- Spiich: Swedish startup. Tracxn records his seed-round investment in November 2025.
Investing activity
Lukas Saari appears in 1 AI deal tracked by the Lounge deals desk. The rounds are mostly Seed, with a median round size of $10M. The most recent is Agaton (Seed, $9.9M (EUR 8.4M), Feb 2026).
Lukas Saari most often invests alongside Inception Fund, Alstin Capital, Guillermo Flor and Peter Sarlin, and the companies they back on Lounge are mostly in AI.
Deals
Frequently asked questions about Lukas Saari
Who is Lukas Saari?
Lukas Saari is the co-founder and CEO of Tandem Health in Stockholm. He previously led McKinsey's Healthcare Analytics practice in the Nordics. He also invests as an angel.
Has Lukas Saari invested in AI startups?
Yes. He was an angel in Agaton's EUR 8.4M seed round, announced in February 2026. Agaton builds AI that turns customer conversations into revenue insights.
What is Lukas Saari's angel check size?
It is not public. We found no statement from him on check size, so we do not list one.
What stage does Lukas Saari invest in?
His recorded angel investments are all seed rounds. Tracxn lists Spiich, Brickanta and Agaton.
Does Lukas Saari invest outside Sweden?
His recorded investments are all in Swedish companies. He has not stated a geographic limit publicly.
How should founders approach Lukas Saari?
He has not published a pitching process. His LinkedIn profile is the public channel we found. He runs Tandem Health full time, so a short, specific note is the practical route.
Is Lukas Saari an angel investor?
Yes. Lukas Saari invests personally as an angel.
What AI companies has Lukas Saari invested in?
Lukas Saari's AI investments include Agaton. The 1 round on Lounge are listed on this page with amounts, dates and co-investors.
What stage does Lukas Saari invest at?
In the rounds tracked on Lounge, Lukas Saari has invested at Seed, with a median round of $10M.
Who does Lukas Saari co-invest with?
Lukas Saari's most frequent co-investors on Lounge are Inception Fund (1 deal), Alstin Capital (1 deal), Guillermo Flor (1 deal), Peter Sarlin (1 deal) and Kieran Flanagan (1 deal).